Child car seat

Abstract

A child car seat comprises a child car seat body, a back portion, and a seat portion connected to the child car seat body. The back portion is rotatably connected to the child car seat body, and the bottom end of the back portion is pulled toward the seat portion side by a spring member at a normal time. At a time of impact, an impact force larger than a force of the spring member rotates the back portion so that the back portion moves away from the seat portion.

I claim:  
     
       1. A child car seat comprising: 
       a car seat body;  
       a back portion having a top end rotatably connected to said car seat body such that said back portion is operable to rotate between a normal position and an impact position, wherein an angle between said back portion and a vertical plane is larger when said back portion is in said normal position than when said back portion is in said impact position;  
       a seat portion connected to said car seat body; and  
       a hooking device connected to said car seat body and engaging a bottom end of said back portion, said hooking device having a hooking surface for engaging said bottom end of said back portion when said back portion is in said normal position, and having a reset slope surface for engaging said bottom end of said back portion when said back portion is in said impact position.  
     
     
       2. The child car seat of  claim 1 , wherein said hooking device is connected to said car seat body so as to be operable to swing freely with respect to said car seat body. 
     
     
       3. The child car seat of  claim 2 , further comprising a spring for biasing said hooking device toward said back portion. 
     
     
       4. The child car seat of  claim 1 , further comprising a spring for biasing said hooking device toward said back portion. 
     
     
       5. A child car seat comprising: 
       a car seat body;  
       a back portion having a top end rotatably connected to said car seat body such that said back portion is operable to rotate between a normal position and an impact position, wherein an angle between said back portion and a vertical plane is larger when said back portion is in said normal position than when said back portion is in said impact position;  
       a seat portion connected to said car seat body; and  
       a hooking device connected to said car seat body and engaging a bottom end of said back portion, said hooking device being connected to said car seat body so as to be operable to swing freely with respect to said car seat body.  
     
     
       6. The child car seat of  claim 5 , further comprising a spring for biasing said hooking device toward said back portion. 
     
     
       7. A child car seat comprising: 
       a car seat body;  
       a back portion having a top end rotatably connected to said car seat body such that said back portion is operable to rotate between a normal position and an impact position, wherein an angle between said back portion and a vertical plane is larger when said back portion is in said normal position than when said back portion is in said impact position;  
       a seat portion connected to said car seat body;  
       a hooking device connected to said car seat body and engaging a bottom end of said back portion; and  
       a belt for holding a child, said belt being connected between a bottom end of said back portion and said seat portion such that said belt applies force to said back portion so as to rotate said back portion when a predetermined amount of force is applied to said belt by the child.  
     
     
       8. The child car seat of  claim 7 , wherein said belt includes an emergency lock retractor including a housing and a back belt wound in said housing, said retractor being operable to allow said wound back belt to be withdrawn from said housing, and operable to restrict the withdrawal of said wound back belt when a withdrawal force equal to or greater than the predetermined amount of force is applied to said belt by the child. 
     
     
       9. The child car seat of  claim 7 , wherein said hooking device has a hooking surface for engaging said bottom end of said back portion when said back portion is in the normal position, and has a reset slope surface for engaging said bottom end of said back portion when said back portion is in the impact position. 
     
     
       10. The child car seat of  claim 9 , wherein said hooking device is connected to said car seat body so as to be operable to swing freely with respect to said car seat body. 
     
     
       11. The child car seat of  claim 10 , further comprising a spring for biasing said hooking device toward said back portion. 
     
     
       12. The child car seat of  claim 7 , wherein said hooking device is connected to said car seat body so as to be operable to swing freely with respect to said car seat body. 
     
     
       13. The child car seat of  claim 12 , further comprising a spring for biasing said hooking device toward said back portion. 
     
     
       14. The child car seat of  claim 7 , further comprising a spring for biasing said hooking device toward said back portion.